哈密三塘湖风区风特征分析

Analysis of Wind Characteristics in the Santanghu Wind Zone of Hami

摘要: 基于三塘湖气象站的风速数据，对两分钟平均风速、风向、大风日数进行分析，得出三塘湖风区的风速特征。结果表明：1) 三塘湖年平均风速7.0 m/s，呈微弱下降趋势；2) 月平均风速呈单峰型变化，峰值出现在5月，呈现出明显的季节特点，春夏季风速大，秋冬季风速小；3) 日平均风速为6.7 m/s，最大值出现在下午16时和17时；4) 三塘湖大风多出现在下午时段，月变化规律和平均风速的月变化曲线高度一致；5) 计算得出50年一遇最大风速为30.5 m/s，基本风压为0.45 kN/m²；6) 三塘湖主导风向为SSW，季节变化不大，70%的大风风向出现在SSW-W之间，N和NE方向极少出现大风。

Abstract: Based on the wind speed data from the Santanghu meteorological station, the two-minute average wind speed, wind direction, and number of strong wind days were analyzed to obtain the wind speed characteristics of the Santanghu wind area. The results show that: 1) The annual average wind speed of Santang Lake is 7.0 m/s, showing a slight downward trend; 2) The monthly average wind speed shows a unimodal variation, with a peak appearing in May and showing obvious seasonal characteristics. The wind speed is higher in spring and summer, and lower in autumn and winter; 3) The daily average wind speed is 6.7 m/s, with the maximum values occurring at 16:00 and 17:00 in the afternoon; 4) The strong winds in Santang Lake often occur in the afternoon, and the monthly variation pattern is highly consistent with the monthly variation curve of the average wind speed; 5) The maximum wind speed with a 50-year return period is calculated to be 30.5 m/s, and the basic wind pressure is 0.45 kN/m²; 6) The dominant wind direction in Santang Lake is SSW, with little seasonal variation. 70% of the strong winds occur between SSW-W, and there are very few strong winds in the N and NE directions.